Isle of Wight · England
Window & door mastic in Gurnard, Isle of Wight
Window mastic across Gurnard and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Old mastic that has gone black or come away
- Sealant in the wrong colour for the frame
- Gaps between the frame and the inside reveal
Window mastic in Gurnard
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that can’t flex, so we fit backing rod to set the right depth. That way the new bead bonds to the frame and the wall only. We work on uPVC windows, aluminium frames and window sills, and common reasons people get in touch are hard, cracked sealant around windows and draughts coming in around windows and doors.
Mastic can only go onto a dry, clean joint, so window work in Gurnard is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Gurnard (PO31)
- Wider area
- Isle of Wight
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Gurnard: your questions answered
Is Gurnard in your area for window mastic?
Yes. We work across London and the South East, and Gurnard is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Is window mastic in a coastal place like Gurnard any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
Do you guarantee window mastic?
Yes. Our one-year guarantee covers every job.
How much does window mastic cost in Gurnard?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Will resealing my frames help with draughts?
It will if the frame joint is the problem. We check where the draught is before work begins.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Walk round the house once a year and look at the joints
- Paint up to the joint, not over it
- Keep timber frames painted
- Clear any debris from frame drain holes
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and a cold room gets colder. A new joint closes it up.
What we’re called out for in Gurnard
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. A sealant that cannot keep up eventually tears.
Common reasons people contact us are:
- Rushed sealant from a window installation
- White mastic on grey or black frames
- Whistling draughts around closed windows
- Mastic that has split away from the wall
If you live in an older home near All Saints' Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before you book
- Are they insured?
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- Is VAT in the price?
How the job changes by surface
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. If we find rot, we will tell you before going ahead, as a joiner will need to deal with it.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Condensation trapped between the panes
- Soft or decayed wood in the frame
- Penetrating damp from a failed cavity tray or render
If in doubt, phone 0345 464 0079 or email us and we will say what we think before booking.
Surfaces we seal
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Window sills
- Composite doors
How we quote for window mastic
The quote reflects the job in front of us. We take into account:
- The old material and how stubborn it is
- Access and height
- The type of sealant required
- How much there is to do
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear price for the lot.
What to tell us for a quote
When you contact us, these details help:
- Where the property is
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- A few pictures by email, if you can
If you’re in Gurnard and need window mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Frames and glazing around Gurnard
Gurnard is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as Gurnard Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Gurnard is about 1 mile west of Cowes, in the Isle of Wight. Whether you are in the middle of Gurnard or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Gurnard is one of 125 places in the Isle of Wight we cover. For nearby work, see our Portsmouth page (11 miles or so).
Every address in PO31 is covered for window mastic. Whether your property is on Cow Lane, The Avenue and Shore Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for window mastic include Cowes (1 mile east), Northwood (1 mile south), Rew Street (1 mile south-west), Great Thorness (2 miles south-west) and Noke Common (2 miles south). Larger places within reach include Newport (4 miles south), Ryde (7 miles east), Sandown (10 miles south-east), Shanklin (11 miles south-east), Ventnor (12 miles south-east) and Oakfield (8 miles east). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Near you in Gurnard
Around Gurnard, our work takes us to homes and buildings near Cowes Enterprise College and The Portland Inn, among other places. A little further out are St Mary's Hospital (3.2 miles south) and Isle of Wight Natural History Centre (0.5 miles south-east). The countryside around Gurnard includes Mill Hill and Briddlesford Nature Reserve.
Nearby places to Gurnard
Other services in Gurnard
The process
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes anything from an hour or two to a full day, depending on how many frames there are in most cases. For a village or hamlet like Gurnard, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
We quote each job on its own. Just ring 0345 464 0079 or send us an email with the details.